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using Ryujinx.Horizon.Common;
using System;
namespace Ryujinx.Horizon.Sdk.Sf.Hipc
{
static class Api
{
public const int TlsMessageBufferSize = 0x100;
public static Result Receive(out ReceiveResult recvResult, int sessionHandle, Span<byte> messageBuffer)
{
Result result = ReceiveImpl(sessionHandle, messageBuffer);
if (result == KernelResult.PortRemoteClosed)
{
recvResult = ReceiveResult.Closed;
return Result.Success;
}
else if (result == KernelResult.ReceiveListBroken)
{
recvResult = ReceiveResult.NeedsRetry;
return Result.Success;
}
recvResult = ReceiveResult.Success;
return result;
}
private static Result ReceiveImpl(int sessionHandle, Span<byte> messageBuffer)
{
Span<int> handles = stackalloc int[1];
handles[0] = sessionHandle;
var tlsSpan = HorizonStatic.AddressSpace.GetSpan(HorizonStatic.ThreadContext.TlsAddress, TlsMessageBufferSize);
if (messageBuffer == tlsSpan)
{
return HorizonStatic.Syscall.ReplyAndReceive(out _, handles, 0, -1L);
}
else
{
throw new NotImplementedException();
}
}
public static Result Reply(int sessionHandle, ReadOnlySpan<byte> messageBuffer)
{
Result result = ReplyImpl(sessionHandle, messageBuffer);
result.AbortUnless(KernelResult.TimedOut, KernelResult.PortRemoteClosed);
return Result.Success;
}
private static Result ReplyImpl(int sessionHandle, ReadOnlySpan<byte> messageBuffer)
{
Span<int> handles = stackalloc int[1];
handles[0] = sessionHandle;
var tlsSpan = HorizonStatic.AddressSpace.GetSpan(HorizonStatic.ThreadContext.TlsAddress, TlsMessageBufferSize);
if (messageBuffer == tlsSpan)
{
return HorizonStatic.Syscall.ReplyAndReceive(out _, handles, sessionHandle, 0);
}
else
{
throw new NotImplementedException();
}
}
public static Result CreateSession(out int serverHandle, out int clientHandle)
{
Result result = HorizonStatic.Syscall.CreateSession(out serverHandle, out clientHandle, false, null);
if (result == KernelResult.OutOfResource)
{
return HipcResult.OutOfSessions;
}
return result;
}
}
}
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